After I estimated my impact on the environment, I realized that most of it comes from airplane flights. I am not flying anywhere this winter except for the Army, so I could simply calculate my lessened footprint from not flying to Latin America as I would normally do, but that is too simple. I bicycle everywhere, I recycle, I compost, I rarely eat out, and I keep my thermostat at 48 degrees F. A more pervasive aspect of my life is my use of batteries.
What about Batteries?

Looking for hard facts without much luck
I looked for information about this on Google, and the pickings seemed to be rather slim. To begin with, I eliminated anything that ended in .com, and wound up with a host of well-meaning but little informed, and almost never rigorous, websites. A commonly cited study was in fact commissioned by Uniross – a company that manufactures (you guessed it!) rechargeable batteries. According to them, switching to rechargeable batteries in Europe would divide the ecological impact of batteries on the environment by 28. I would assume that the numbers would be even better outside Europe, because outside Europe, cheap and very ineffective “Chinese” batteries are the norm. Here in Sitka, thanks to hydroelectric energy, supply chain inefficiencies, and somewhat low temperatures, the number would probably also be better. Of course, I hate to trust the manufacturer... Then there is the popular website Redefining Progress, which rates switching to rechargeable batteries on the same impact level as six degrees F of difference in air conditioning temperature. Clearly, there’s a disconnect here. One promising avenue is a European website, but most of what it does is advocate for recycling (recyclable NiMH batteries are recyclable as well).